\(1\;+\;\frac{x^2}{2!}\;+\;\frac{x^4}{4!}\;+\;\frac{x^6}{6!}\;+\;..... – McqOptions

MCQOPTIONS

1.	\(1\;+\;\frac{x^2}{2!}\;+\;\frac{x^4}{4!}\;+\;\frac{x^6}{6!}\;+\;.....\) stands for.
A.	sinh x
B.	cosh x
C.	cos x
D.	sin x
Answer» C. cos x

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